(a) The district attorney of each judicial circuit is hereby authorized to employ, in any manner as he or she shall determine necessary, assistant district attorneys, investigators, clerical, secretarial, and other personnel, who shall be paid from funds available for that purpose. Unless otherwise provided by local law for Talladega County, all of these employees shall serve at the pleasure of the district attorney and shall not be considered employees under the State Merit System Act.
(b) The district attorney is authorized to supplement the salaries of personnel employed within his or her office.
(c) The district attorney is authorized to use funds available to him or her from all sources such as grants, appropriations, gifts, and other sources for the purposes stated in this section or for any other law enforcement purpose.
(d) Counties are authorized to supplement state expenditures as they deem necessary and shall provide other financial support as required by laws in effect on September 30, 1977.